Aggregator item not updating RSS feed

I have an aggregator item view that is reading an external rss feed. The RSS feed page in Drupal is otherwise updating hourly, but the content is not updating in my view. I added the field last checked in my view - which is dating to yesterday. What setting do I need to change so that it updates? Here is my export.

$view = new view;
$view->name = 'home_feed';
$view->description = '';
$view->tag = 'home';
$view->view_php = '';
$view->base_table = 'aggregator_item';
$view->is_cacheable = FALSE;
$view->api_version = 2;
$view->disabled = FALSE; /* Edit this to true to make a default view disabled initially */
$handler = $view->new_display('default', 'Defaults', 'default');
$handler->override_option('fields', array(
'title_1' => array(
'label' => '',
'alter' => array(
'alter_text' => 0,
'text' => '',
'make_link' => 0,
'path' => '',
'link_class' => '',
'alt' => '',
'prefix' => '',
'suffix' => '',
'help' => '',
'trim' => 0,
'max_length' => '',
'word_boundary' => 1,
'ellipsis' => 1,
'strip_tags' => 0,
'html' => 0,
),
'display_as_link' => 1,
'exclude' => 0,
'id' => 'title_1',
'table' => 'aggregator_item',
'field' => 'title',
'relationship' => 'none',
),
'checked' => array(
'label' => 'Last checked',
'alter' => array(
'alter_text' => 0,
'text' => '',
'make_link' => 0,
'path' => '',
'link_class' => '',
'alt' => '',
'prefix' => '',
'suffix' => '',
'help' => '',
'trim' => 0,
'max_length' => '',
'word_boundary' => 1,
'ellipsis' => 1,
'strip_tags' => 0,
'html' => 0,
),
'date_format' => 'small',
'custom_date_format' => '',
'exclude' => 0,
'id' => 'checked',
'table' => 'aggregator_feed',
'field' => 'checked',
'relationship' => 'none',
),
));
$handler->override_option('filters', array(
'fid' => array(
'operator' => '=',
'value' => array(
'value' => '2',
'min' => '',
'max' => '',
),
'group' => '0',
'exposed' => FALSE,
'expose' => array(
'operator' => FALSE,
'label' => '',
),
'id' => 'fid',
'table' => 'aggregator_feed',
'field' => 'fid',
'relationship' => 'none',
),
));
$handler->override_option('access', array(
'type' => 'none',
));
$handler->override_option('cache', array(
'type' => 'none',
));
$handler->override_option('title', 'Yahoo Business News');
$handler->override_option('items_per_page', 5);
$handler->override_option('use_pager', '0');
$handler->override_option('pager_element', 1);
$handler->override_option('use_more', 1);
$handler->override_option('distinct', 1);
$handler = $view->new_display('page', 'Page', 'page_1');
$handler->override_option('path', 'yahoonews');
$handler->override_option('menu', array(
'type' => 'none',
'title' => '',
'description' => '',
'weight' => 0,
'name' => 'navigation',
));
$handler->override_option('tab_options', array(
'type' => 'none',
'title' => '',
'description' => '',
'weight' => 0,
));

Thanks!